LAS VEGAS -- Boxing's No. 1 pound-for-pound fighter Floyd Mayweather encountered one of his toughest fights but managed to hang on Saturday night and gain a majority decision against Marcos Maidana to become the WBA and WBC welterweight champion of the world.

"It was a tough fight, which is what the fans wanted to see," said the unbeaten Mayweather.

Judge Michael Pernick scored it 114-114, a draw. Bert Clements had it 117-111 and Dave Moretti score it 116-112 for Mayweather. The announcement was met by boos from some of the crowd. Maidana's camp had been so excited at the end that his handlers carried him around on their shoulders.

"If the fans want to see it again, let's do it again," Mayweather said.

Said Maidana, "I have to give him a rematch, because I won."

Maidana added that he thought Mayweather didn't fight like a man. "Other fighters respected him and didn't go toe-to toe with him like I did," he said.

Mayweather is now 46-0 with 26 KOs, while Maidana falls to 35-4 with 31 KOs.

Maidana coming right at him. Floyd ducks a few punches. Both fighters cautiously feeling each other out. Maidana gets Floyd in corner and throws a hard right. Maidana pouring it on with his overhand rights. Crowd roaring. Toe-to-toe action. Floyd connects on left hook. Big first round for Maidana. 1-0 Maidana

SECOND ROUND

Floyd using his jab. Maidana counters with his jab. Mayweather with a lead right. Again Maidana gets him on the ropes and throws a flurry. Throwing his overhand right big time. Floyd moving to try to avoid the big punch. Give that round to Floyd, who landed hard punches. 1-1

Maidana comes at Floyd, who complains of rough tactics. Maidana right to the body, but Floyd counters. Floyd staying on the ropes. Crowd chanting for "Chino" Maidana. Another hard right to the body by Maidana. Floyd seems to be cut on his right eye. Maidana finished the round with a flurry of overhand rights, and Floyd is bleeding from the cut. Maidana's round again 3-1.

FIFTH ROUND

Floyd looks a little worried here. Haven't seen him cut in a while. Floyd ducking punches. Crowd chants for Chino again. Throwing vicious overhand rights. Floyd seems completely out of his game here. Right and hard left by Maidana. Another round for Chino. 4-1. Floyd needs to get on the ball.

SIXTH ROUND

Floyd seems as if he's letting Maidana punch himself out. So far it hasn't happened. Maidana not letting Floyd do his thing. Even his shoulder roll is not working. Maidana is smothering Floyd. Floyd connects on several hard lefts, then catches Maidana with a straight right hand. A left and a hard right by Floyd ends the round. This one to Mayweather. 4-2 Maidana.

SEVENTH ROUND

Floyd escapes the corner and punishes Maidana. Crowd chants "USA-USA!" as Floyd starting to find his range. Looks as if Floyd is starting to figure Maidana out. Couple of overhand rights by Floyd connect. He finishes the round with a quick combination. Another round for Floyd but still 4-3 Maidana.

EIGHTH ROUND

Maidana using that chopping overhand right to get Mayweather in the corner. Low blow by Maidana. Floyd getting angry at the seemingly dirty fighting. Hard left by Floyd connects. Maidana chases him into the ropes and throws a couple overhand rights, his signature punch. Very close round, but have to give that one for Maidana who leads on this card 5-3.

NINTH ROUND

Maidana tenacious as he walks Floyd down. Hard right hand by Floyd. Left and a right by Floyd. Hard overhand right to the body by Maidana. Floyd throws a couple of quick combinations. Maidana goes back to the jab. Maidana throws a couple of jabs to end the round. That round goes to Floyd. 5-4 Maidana as we head to the 10th.

10TH ROUND

It has been a while since Floyd has been in such a tough fight. But he uses his boxing skills to take it to Maidana early. Overhand right by Floyd, and he ducks several punches then connects on a straight right and an overhand right that seals the round for him as the bell rings. It's now 5-5 on this card.

11TH ROUND

Maidana slowing down as Floyd starts to show his dominance. But he lunges and misses two rights. Both fighters appear tired here in the 11th. Maidana goes after Floyd on the ropes and throws several hard overhand rights. Maidana pushes Floyd into the ropes and almost out of the ring. They fight a little after the bell as the crowd roars. Give the round to Maidana, but it was close again. Many close rounds here. 6-5 Maidana on this card.

12TH ROUND

Floyd starts with a combination. And Maidana goes for broke. He shakes his right hand. One minute left. I don't think Floyd will lose this fight, even if I have Maidana. He will get the benefit of the doubt. Floyd has landed a much higher % of punches than Maidana. It's over. Close round. Floyd. 6-6.